re PR fortran/91729 (ICE in gfc_match_select_rank, at fortran/match.c:6586)

re PR fortran/91729 (ICE in gfc_match_select_rank, at fortran/match.c:6586)

2019-09-23  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/91729
	* match.c (gfc_match_select_rank): Initialise 'as' to NULL.
	Check for a symtree in the selector expression before trying to
	assign a value to 'as'. Revert to gfc_error and go to cleanup
	after setting a MATCH_ERROR.

2019-09-23  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/91729
	* gfortran.dg/select_rank_2.f90 : Add two more errors in foo2.
	* gfortran.dg/select_rank_3.f90 : New test.

From-SVN: r276051